• kinetic-molecular theory is a theory that explains the states of matter and is based on the idea that matter is composed of tiny particles that are always in motion.
  • The theory is most easily understood as it applies to gases and it is with gases that we will begin our detailed study.
  • An ideal gas is an imaginary gas whose behavior perfectly fits all the assumptions of the kinetic-Molecular Theory.
  • In reality, gases are not ideal, but are very close to being so under most everyday conditions.
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